Gore talks climate on 'Jeopardy!'

Answer: "What is carbon dioxide?"

Gore has pushed to make sure President Obama doesn’t ignore carbon emissions, either.

The former vice president has long prodded Obama be more forceful on climate change. He and green groups want the president to use executive authority to curb emissions with Republicans appearing to close the congressional route for climate action.

After president’s January inaugural speech, in which Obama devoted significant time to climate issues, Gore expressed optimism about the prospects of seriously addressing climate.

Aside from climate, Gore’s "Jeopardy!" appearance also touched on China’s emergence as the world’s top manufacturer, outsourcing, erosion of topsoil and thermodynamics.

— This story was updated at 3:38 p.m.

More from The Hill:
• Kerry slams critics of foreign aid
• Most of Congress has never debated immigration reform
• Challenger must battle for Tea Party support to face McConnell
• Congress must beef up its cybersecurity, experts say
• Grassley: Lew needs to provide more details
• Ashley Judd meets with DSCC, donors on potential Senate bid
• Dems demand BoehnerJohn Andrew BoehnerFormer Speaker Boehner's official portrait unveiled Key Republicans say Biden can break Washington gridlock From learning on his feet to policy director MORE call House back to deal with sequester
• US, partners to offer Iran new deal to avert nuclear crisis